{"product_id":"icp-control-board-for-wpa4304000rka1-oem-circuit-board-ships-today-1","title":"ICP Control Board for WPA4304000RKA1 — OEM Circuit Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM control circuit board (OEM part #1178001) is the electronic brain of the ICP\/Tempstar\/Heil WPA4304000RKA1 system. The board sequences operation — managing the blower, control relays, safety inputs, and timing logic in response to thermostat calls. When the board fails, the symptoms can mimic many other failures: no response to the thermostat, blower that won't start or won't stop, intermittent operation, or fault LED codes that won't clear. Installing a known-good OEM board restores correct, code-compliant control sequencing and eliminates the guesswork of chasing a phantom electrical fault.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1178001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl \/ Circuit Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eSystem control and sequencing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM replacement control board for the ICP\/Tempstar\/Heil model WPA4304000RKA1. Match the part number and board layout\/connector positions to your existing board before installing, as control boards are revision-specific.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/electrical service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every connector and the position of each wire harness on the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all harnesses and unscrew\/unclip the old board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, transfer any jumpers\/dip-switch settings, and reconnect all harnesses per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a full heating\/cooling cycle, and confirm there are no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSystem unresponsive to thermostat calls\u003c\/li\u003e\n\u003cli\u003eBlower or relays won't energize, or won't shut off\u003c\/li\u003e\n\u003cli\u003eIntermittent operation or repeating fault\/error LED codes\u003c\/li\u003e\n\u003cli\u003eVisible scorching, burnt traces, or a failed relay on the board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027226575219,"sku":"1178001","price":239.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047466451315,"sku":"1178001-GEN","price":184.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1178001_5fc72d52-28ed-4e9a-b2bc-402cca715264.jpg?v=1782885451","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-for-wpa4304000rka1-oem-circuit-board-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}